package com.mhr.servlet;

import com.mhr.dao.BookDao;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.IOException;

@WebServlet("/delete")
public class DeleteServlet extends HttpServlet {
    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        req.setCharacterEncoding("utf-8");
        resp.setContentType("text/html;charset=utf-8");
        BookDao dao = new BookDao();
        String stringId = req.getParameter("id");
        String msg;
        if(stringId != null){
            int id = Integer.parseInt(stringId);
            System.out.println(dao.delete(id));
            resp.sendRedirect("/book/list");
        }else{
            msg = "删除失败";
            req.setAttribute("msg",msg);
            resp.sendRedirect("/book/list");
        }
    }

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        doGet(req,resp);
    }
}
